Do you have the link? I would like to see how they phrased the question. I am inclined to believe that the government knew in advance of 9/11 (or a 9/11-type threat) but did nothing out of ignorance rather than malice or design. But answering thusly on THAT poll would lump me in with the nutcases.
It's like a poll question reading: "You are sexually attracted to chocolate cake, or you like chocolate cake. Yes or No?"
Its in post number 96. But its older, so not sure if they have the exact phrasing of the question available.